- Princess Aura: You surprise me, Earth man... and please me too.
- Dale Arden: Now there's a designing woman - and her designs are all for you!
- Flash Gordon: Jealous, Dale?
- Dale Arden: You're darned right I am!
- Thun: If it were not for Ming, Barin would be emperor of Mongo. Which would be no improvement at all, if you ask me.
- Flash Gordon: You both hate your ruler, Ming, and yet you fight between yourselves.
- Thun: Every race on Mongo is an enemy to every other race.
- Prince Barin: Each man stands alone on Mongo, as you'll learn - if you survive, Earth man.
- Flash Gordon: That other truck, where does it go?
- Prince Barin: To the devil. It leads eventually to Ming's palace.
- Flash Gordon: Heh. If we've got to go, why not go in style?
- Flash Gordon: A true prince does not run from danger.
- Prince Barin: You owe me satisfaction for that insult, Earth man!
- Flash Gordon: Pick your time, Prince Barin. Right now we've got more pressing matters.
- Dale Arden: What's that?
- [all stop to listen to ominous shrieking]
- Flash Gordon: Whatever it is, I don't think It'll make the Top Forty.
- Princess Aura: I wish to study these strange visitors to our world...
- Dale Arden: She means you, Flash.
- Flash Gordon: A fate better than some I can think of.
- [first lines]
- Narrator: Flash, Dale and Zarkov have set out for Mongo on a mission of mercy: to prevent the impending collision between Earth and the mysterious comet world. But as their rocketship enters the atmosphere of the alien planet, there is an unprovoked attack which destroys the guidance system, plummeting them toward unknown danger below.